diff options
| author | Dharma Balasubiramani <[email protected]> | 2025-05-20 15:21:46 +0000 |
|---|---|---|
| committer | William Breathitt Gray <[email protected]> | 2025-05-22 09:40:19 +0000 |
| commit | ae3392c0f12f179b969ce17856ed18bf8d69a35e (patch) | |
| tree | 920c9bd7ad68d82bac45221568dc136e02d4d839 /drivers/fpga/tests | |
| parent | counter: stm32-timer-cnt: add support for stm32mp25 (diff) | |
| download | kernel-ae3392c0f12f179b969ce17856ed18bf8d69a35e.tar.gz kernel-ae3392c0f12f179b969ce17856ed18bf8d69a35e.zip | |
counter: microchip-tcb-capture: Add watch validation support
The Timer Counter Block (TCB) exposes several kinds of events to the
Counter framework, but not every event is meaningful on every hardware
channel. Add a `watch_validate()` callback so userspace may register only
the combinations actually supported:
* Channel 0 (COUNTER_MCHP_EVCHN_CV, COUNTER_MCHP_EVCHN_RA)
- COUNTER_EVENT_CAPTURE
- COUNTER_EVENT_CHANGE_OF_STATE
- COUNTER_EVENT_OVERFLOW
* Channel 1 (COUNTER_MCHP_EVCHN_RB)
- COUNTER_EVENT_CAPTURE
* Channel 2 (COUNTER_MCHP_EVCHN_RC)
- COUNTER_EVENT_THRESHOLD
Any other request is rejected with `-EINVAL`.
Signed-off-by: Dharma Balasubiramani <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: William Breathitt Gray <[email protected]>
Diffstat (limited to 'drivers/fpga/tests')
0 files changed, 0 insertions, 0 deletions